Kbase Article of the Week: Using iCal with Microsoft Entourage → July 19, 2022 ⌘ Permalink Stephen Hackett Apple: iCal and the calendar feature of Microsoft Entourage can be used together–as long as you have iCal 1.5 or later and Mac OS X 10.3.5 or later installed. Now I’m just having flashbacks to using Entourage in college to access my school email.